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Utility model certificate-15

Release time：2021-12-17 Reading volume： Author：Chengdu DongLanxing Technology Development Co., Ltd.

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Chengdu DongLanxing Technology Development Co., Ltd. Chengdu Donglanxing New Material Co., Ltd.
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Mr Ji-15196618285

address：24F, Xincheng International Plaza, Tianfu 1st Street, hi tech Zone, Chengdu

email：1466273989@qq.com

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